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BLAST searching all the insertions in the paper reveals there is indeed a 100% match of those residues in a known bat corona virus (Accession #QHR63300.1). However–the submitter of that bat corona virus is actually Wuhan Virology Institute, submitted 4 days ago (Feb 27, 2020). As a professional of a closely related field, do you think any of that is even relevant? If the validity of that bat corona virus is in question, then these 4 insertions are truly novel in an known corona virus.